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There's no place like home!

Rihanna slipped into a skimpy bikini and hit the pool in Barbados on Wednesday, and she gave us a peek at her tattoos ... and her amazing bod!

And it sounds like the 24-year-old R&B star could use a little time off, as on-again/off-again ex Chris Brown and his on-again/off-again ex, Karrueche Tran, are reportedly back together. "Being single sucks," RiRi tweeted on Tuesday. "The only thing I get to do anymore is whatever the f*ck I want to do."

So does this mean Chris broke things off just to get back together with Karrueche? Possibly! "You know what, from what I've always known, she's his girlfriend," Christina Millian blabbed to Wendy Williams last week. "And that's where it lies for me. I see everything in the media. I really don't get into the detail of it, but I think everybody has their own life and how they deal with things. They have the right to handle it how they want ... I think they make a great couple." Sounds like some R&R in the islands is just what the doctor ordered!